XRT72L13 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XRT72L13

M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

Exar Corporation 

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XRT72L13

M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

REV. P1.0.6

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PRELIMINARY

PIN DESCRIPTIONS

PIN #

144

NAME

TxDS1Clk_4

145

TxDS1Data_3

146

GND

147

TxDS1Clk_3

148

TxDS1Data_2

149

TxDS1Clk_2

150

TxDS1Data_1

151

TxDS1Clk_1

152

TxDS1Data_0

153

TxDS1Clk_0

154

DS2InClk

TYPE

I

I

****

I

I

I

I

I

I

I

I

DESCRIPTION

Transmit DS1/E1 Clock Input - Channel 4:

This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)

clock signal from the Terminal Equipment. The falling edge of this sig-

nal is used to sample the data at the "TxDS1Data_4" input pin.

Transmit DS1 Data Input - Channel 3:

This input pin accepts a DS1 signal from the Terminal Equipment.

This input pin is sampled upon the "falling edge" of the TxDS1Clk_3

signal.

NOTES:

1. This input pin is inactive if the corresponding M12 MUX is

multiplexing 3 E1's into an ITU-T G.747 data stream.

2. This input pin accepts DS2 data if M12 MUX # 1 is bypassed.

Ground Pin

Transmit DS1 Clock Input - Channel 3:

This input pin accepts a DS1 (1.544MHz) clock signal from the Termi-

nal Equipment. The falling edge of this signal is used to sample the

data at the "TxDS1Data_3" input pin.

NOTES:

1. This input pin is inactive if the corresponding M12 MUX is

multiplexing 3 E1's into an ITU-T G.747 data stream.

2. This input pin accepts a DS2 rate clock signal (6.312MHz) if

M12 MUX # 1 is bypassed.

Transmit DS1/E1 Data Input - Channel 2:

This input pin accepts either a DS1 or E1 signal from the Terminal

Equipment. This input pin is sampled upon the "falling edge" of the

TxDS1Clk_2 signal.

Transmit DS1/E1 Clock Input - Channel 2:

This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)

clock signal from the Terminal Equipment. The falling edge of this sig-

nal is used to sample the data at the "TxDS1Data_2" input pin.

Transmit DS1/E1 Data Input - Channel 1:

This input pin accepts either a DS1 or E1 signal from the Terminal

Equipment. This input pin is sampled upon the "falling edge" of the

TxDS1Clk_1 signal.

Transmit DS1/E1 Clock Input - Channel 1:

This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)

clock signal from the Terminal Equipment. The falling edge of this sig-

nal is used to sample the data at the "TxDS1Data_1" input pin.

Transmit DS1/E1 Data Input - Channel 1:

This input pin accepts either a DS1 or E1 signal from the Terminal

Equipment. This input pin is sampled upon the "falling edge" of the

TxDS1Clk_0 signal.

Transmit DS1/E1 Clock Input - Channel 1:

This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)

clock signal from the Terminal Equipment. The falling edge of this sig-

nal is used to sample the data at the "TxDS1Data_0" input pin.

Transmit DS2 Clock Input

24

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